New WMA audio codecs

by MT for Rockbox

The WMA codec officially has 4 flavours : - WMA - WMA Professional - WMA lossless - WMA voice The project aims primarily to add support for WMA professional in Rockbox, and streamline its power consumption and memory usage. As a secondary goal, if time allowed, a port of WMA voice could be started too, but due to the size of such codec it's not guaranteed to be fully working by the end of the project.